diff --git a/manifest.json b/manifest.json
index 5a5900eda..61ca1972f 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,6 +1,6 @@
 {
     "variables": {
-        "${LATEST}": "3.334.6"
+        "${LATEST}": "3.335.0"
     },
     "endpoints": "https://raw.githubusercontent.com/aws/aws-sdk-php/${LATEST}/src/data/endpoints.json",
     "services": {
diff --git a/src/Service/Athena/CHANGELOG.md b/src/Service/Athena/CHANGELOG.md
index 1c73a079f..05830072d 100644
--- a/src/Service/Athena/CHANGELOG.md
+++ b/src/Service/Athena/CHANGELOG.md
@@ -5,6 +5,7 @@
 ### Added
 
 - AWS api-change: Add FEDERATED type to CreateDataCatalog. This creates Athena Data Catalog, AWS Lambda connector, and AWS Glue connection. Create/DeleteDataCatalog returns DataCatalog. Add Status, ConnectionType, and Error to DataCatalog and DataCatalogSummary. Add DeleteCatalogOnly to delete Athena Catalog only.
+- AWS api-change: Added `ap-southeast-5` region
 
 ## 3.0.0
 
diff --git a/src/Service/Athena/src/AthenaClient.php b/src/Service/Athena/src/AthenaClient.php
index e14dce1ac..bad3d7644 100644
--- a/src/Service/Athena/src/AthenaClient.php
+++ b/src/Service/Athena/src/AthenaClient.php
@@ -714,6 +714,7 @@ protected function getEndpointMetadata(?string $region): array
             case 'ap-southeast-2':
             case 'ap-southeast-3':
             case 'ap-southeast-4':
+            case 'ap-southeast-5':
             case 'ca-central-1':
             case 'ca-west-1':
             case 'eu-central-1':